Gumming machine



July 6, 1948. w. c. MARSH GUMMING MACHINE 3 Sheets-Sheet 1 Filed 001;. 30, 1944 W. C. MARSH GUMMING MACHINE July 6, 1948.

Filed 001;. 30, 1944 3 Sheets-Shegt 2 /A/ I/EA/TOR:

July 6,1948. Q MARSH 2,444,878

GUMMING MACHINE I Filed 001;. 30, 1944 3 Sheets-Sheet 3 Patented July 6, 1948 UNITED STATES OFFICE GUMMING MACHINE Application October 30, 1944, Serial No. 561,095

24 Claims.

This invention pertains to a label gumming machine for applying adhesive substance to paper strips such as labels.

It is a primary object of the invention to provide a label gumming machine or the rotatable applicator type which may be readily cleaned without the removal of any parts.

It is also an object of the invention to provide an improved adhesive applicator for label gumming machines.

Still another object of the invention is to provide an improved means for controlling the amount of adhesive substance adhering to a rotatable applicator which is incapable of becoming jammed.

More specifically, it is an object of the invention to provide a label gum-mi-ng machine with a washing means into which the rotatable drum of the applier may be immersed without removal of its parts from the machine.

Other objects and advantages of the invention I will become apparent as the description proceeds.

In carrying out the invention in its preferred form, an improved rotatable paste-applying drum has been mounted with respect to a gum pot and awash compartment in a manner such that the entire adhesive-applying assembly can be pivotally moved from its position in the gum pot to the water bath without removal of the parts. Further, the adhesive-applying drum is provided with a spring impressed scraper provided with means for adjusting the tension-of its spring in a manner such that the maximum pressure at which the scraper may be impressed against the roller is predetermined.

For a more comprehensive understanding of the invention, reference will be had to the fol lowing detailed description together with the accompanying drawings which form a part thereof and in which:

Fig. 1 is a plan view of a label gumming machine embodying the invention in its preferred form and showing the covers thereof in an open position to expose the parts;

Fig. 2 is an end View of the machine, taken from the bottom of Fig. 1, with parts of the water tank broken away showing the driving mechanism for the gum-applying roller;

Fig. 3 is a plan view of the machine similar to Fig. 1 showing one of the covers closed. to position the cooperating parts for operation of the machine;

Fig. 4 is a fragmentary end view of the machine, taken from the top of Figs. 1 and 3, showing portions of the mounting of the gum-applying roller and the tensiomng mechanism for the scraper forming a part thereof;

Fig. 5 is a full end view similar to Fig. 2 but differing therefrom in that the cover supporting the feed rollers is closed to the operating position;

Fig. 6 is a fragmentary cross-sectional view of the machine illustrated taken along the line 6-6 of Fig. 3;

Fig. '7 is a full cross-sectional view taken along the line ll of Fig. 3 and illustrating the path taken by a label in passing through the machine;

Fig. 8 is a detailed showing of one of the pivotal brackets used in mounting the gum-applying roller;

Fig. 9 is a cross section of the gum-applying roller, taken along the line 99 of Fig. 1, illustrating the position of the deflecting fingers thereof;

Fig. 10 is an end view of the machine showing the gum-applying roller positioned in the washing receptacle with the covers of the machine open, feed rollers and the supporting portion of the cover being broken away for conservation of space on the drawing;

Fig- 11 is a view presenting .a similar showing to that of Fig. 10, but illustrating the manner in which the machine may be closed when not in use; and

Fig. 12 is an end view of the machine, from the end opposite that of Fig. 11, with sections of the casting removed to illustrate the position of the parts when the machine is closed and out of use. Like reference numerals have been used throughout in the severalviews to designate like parts.

- As illustrated in Figs. 1 and. 2, a unitary casting 2|, which is partitioned to form a washing chamber 22 and a gum receptacle 23, provides a base for the machine. The machine rests on the bottom of the washing chamber housing and on legs 24 formed as part of the casting.

A rotatable gum-applying drum 25 is rotatably mounted in a suitable frame, to be moved, as indicated by the arrow, from the gum receptacle 23 to the water bath 22 and vice versa. Two covers 26 and 21 are hinged to the casting and provide I means for closing the machine when it is not in use. The cover 26 carries feed rollers 28 and 29 arranged to be driven by the same mechanism that drives the drum 25, all in a manner which will be explained subsequently in detail. With the. cover 26 of the machine closed, as is illustrated in Fig. 3, the label 31, which is to be gummed, is placed on the upper face ofthe cover 26 forming a table therefor and fed into the rollers 28 and 29 where the gum is applied thereto in a manner which will be described in connection with the operation of the machine.

The gum-applying drum 25, together with its associated instrumentalities, embodies a novel feature of invention which permits the drum to be cleaned without removal from the machine. The drum 25'is mounted on a shaft 52 which is journaled in the mounting brackets 33 and 34. Both of the brackets 33 and 34 are similarly shaped and are provided with a pair c-rarm's-35 and 36 which terminate in a hub .S'i forming the journal housing for the bearings in which the;

Each bracket also has a gooseshaft 32 rotates. neck extension 33 projecting from the hub '37, and which is provided with a -hub T39, through which a shaft extending the complete length of the machine, is inserted, and aboutwhich the entire assembly is pivoted. The shaft id is supported in suitable openings-Me passing through the webs of the casting that join the'gumrecep- "tacle' 2?"to the-washing chamber.

A'jbar ll, to one face of whicha knife blade 'o'r'scraperfi is removably attached, is carried between the brackets 33 and 34 and is provided with'rounded ends 'journal e'd in hnbsefi and M, respectively, of the arms 36v. One of these ends projects beyond its journal, for a purpose to be described. A'rod 45 is securely fastened between the arms '35 of the brackets '33- and 3 3 to complete theassenibly.

A'driviiig mechanism lt'for the drum 25 is provided and comprises a pinion 4! which is keyed to the shaft 32 at A8. A crank 49is secured to: the pinion 41 and provides a means for manually operating the machine. A plurality o'f 'deflecting'fingers 59am bent around and are "amount of"adhesive substance that'is carried on "tli'e'jdrum 25. Obviously it is desirablethat the amount of adhesive substance may be 'controlled, and accordingly a tension adjusting Iin'eans,generally'designated'53; is provided, and contributes one of the essentialfeatures of the invention in that the knife or scraper 42*canriot be adjusted to a binding position against the "roller 25.

The adjusting mechanism 53is made up of a "thumb screw-'54 which is screwably engaged in an arm 55keye dto the aforementioned projection of the bar to'which the scraper is attached. The thumb screw 54 is carried through .aslot or opening 55 in the arm 380i the bracket '33, witha compression spring-51 bearing against "'the'surface 58 of the arm 38an'd against "the surface 59 of the arm 55. With this arrangement oftheparts the scraperflz is located relativeto the'dlrum 25 by me'ans'of the'thumb 'screw54, .andthe amount of adhesive carried by the ro I'tat'ing'drum is controlled by the position of'the scraper with respect thereto. The adjustable fi'neans53, is so assembledjthat when the thumb screw is turned in one direction, the arm-"55-with "thebar '41 is rocked a-b'outthe journals of the ing it against the drum 25 is controlled and may be set at a predetermined limit by a proper selection of the strength of the spring 51. It will be observed that the arrangement of the fingers .56 ,on thedrum 25 permit the scraper bar to be' in contact with the drum substantially all the way across'thesame.

.As previously stated, the label or paper to be gummed is driven through the machine by means of the feed rollers Hand 29 and the drum 25. These rollers are journaled in a pair of brackets BI and 62 which are adjustably fastened-tothe opposite edges of the cover26 by means of slot and screw arrangements 63. A. pinion and. a

pinion 65 are splined, respectively, to oneterminal end of the rollers 28 and. 29 which extend through the bracket .GI and are mounted'for cooperation with the pinion 41 on the driving mechanism 56. The cover 26 is hinged to-the casting 2! by means of hinges Eli-and 61, and, when it is positionedasin Fig. 2, thepinions B4 and 65 are brought into operational engagement withthe pinion 4?, by movement to the position illustrated in Fig. '5. Then, as the handle 49 of the driving mechanism 48 is turned 'to rotate 'thegum-applying drum 25, the rollers =28gand '29 are positively driven by the V-pinions '64 and .GSQrespectively, and the label is forced through the machine across the gum-applying drum. Both of the pinionsiEfl-and 65-are protectedby a suitable shield 68.

The section 22 of the.casting'2l,'which provides 'a housing for the water bath, has. a liner 10 which is shaped to conform to the internal walls of this chamber. This liner, whichis preferably made of sheetbrass, providesaireceptacle in which water for Washing the drum is contained. It is removable so that. it may=beeasily cleaned. A portion of the casting s2| is removed at both ends thereof to form the apertures 12 and 13. These open sectionsin-the casting enable the liner 10 to be grasped at pointsldzand for its easy and convenient removal. The section 12 also provides an openingthrough which the handle 49 projects when. the gumeapplying drum is immersed in the water bath.

The section of the casting 2| forming the glue-containing compartment 23 is drilledand tapped with-a hole ilfi'into which aaplug '77 is screwed. This plug is removed to drain theadhesive substance from the compartments, and

its height also provides a convenientindicator at the top of which the adhesiveasubstance is carried to maintain the same at adesirablelevel within the compartment 23.

. Operation The machine operates in conventionaland well known manner and requires no detailed description. The label -3l, suchasillustrated in- Fig. 3, isplaced on top of the cover26, which forms a plate therefor and is inserted between the rollers '28 and29, and the drum-25. Thehandle149 and the driving mechanism 46 are then turnedin a clockwise direction, which forces-thalabel 3| between the roller-s28 and 29 and thedrum 25, as is illustrated in Fig. '7. By proper adjustment of the brackets 61 and 62, the pressure exerted by the rollers 28 and 29 on the label 3! is controlled. This pressure also may be varied by manual pressure against the top of the cover 28. As the label passes over the drum 25, the adhesive substance 13 carried in the chamber 23 adheres to the periphery thereof and is carried upwardly to the undersurface of the label, in quantity governed by the scraper 42. As the label continues through the machine, it is deflected upwardly by the fingers 50 and is supported thereby for removal. When the machine is not in use,

the gum-applying assembly is moved pivotally when positioned as illustrated. In this manner,

the drum is always maintained clean and is not subject to incrustations produced by leaving the adhesive substance contained on the roller exposed to air.

It further eliminates the necessity of removing the roller after each use for cleaning thereof. Thus, the machine may be placed into operation and out of operation at will without regard to intervening periods of inactivity or without necessitating the removal of the parts to clean the same.

It is also evident that the operating mechanism 53 is wholly outside the gluing chamber 23, so as to be kept free of glue, but is immersed in the cleaning water when the mechanism is in the position of Fig. 12 for precaution against its becoming fouled. The fingers Eli are readily removable for servicing purposes. To remove one, it is grasped and its upper end is moved backwardly to disengage the hook from the rod l5. Then it may be moved in the same direction until freed from the roller or drum 25.

It is apparent that many changes could be made in the above described apparatus without departing from the scope of the invention. Insofar as such modifications are cover-ed by the appended claims, they are included as if described.

What is claimed is:

1. In a mechanism of the kind described, a main support having an adhesive receptacle and a washing chamber, feed means for applying adhesive from the adhesive chamber to a label or the like, comprising a rotatable drum, and means supporting the drum for partial immersion in the adhesive in the adhesive receptacle, said supporting means being movable to withdraw the drum from the adhesive receptacle and to dis- ;pose the same in fully immersed relation in the washing chamber, said drum being in fully immersed position when in said washing chamber.

2. In a mechanism of the kind described, a :main support having an adhesive receptacle and a washing chamber therein, a feed mechanism including a rotatable drum, drum support means upon which the drum is mounted for rotation, said drum support means including framework attached to the ends of the drum and pivoted to the main support between the receptacle and the chamber, whereby the feed mechanism may be swung from the receptacle to the chamber, and operating means for the feed mechanism, said operating means being outside of the receptacle but connected with the drum, and the washing chamber being disposed and sized to receive both the feed mechanism and the operating means when the feed mechanism is moved to washing position, said feed mechanism being in fully immersed relation when in said washing chamber.

3. In a mechanism of the kind described, a main support having an adhesive receptacle and a washing chamber, feed means for applying adhesive from the adhesive chamber to a label or the like, comprising a rotatable drum, means supporting the drum for partial immersion in the adhesive in the adhesive receptacle, said supporting means being movable to withdraw the drum from the adhesive receptacle and to dispose the same in the washing chamber, feed elements to urge the label against the drum, and means pivoting the feed elements to the main support for movement toward and away from the drum.

4. In a mechanism of the kind described; a main support having an adhesive receptacle and a, washing chamber, feed means for applying adhesive from the adhesive chamber to a' label or the like, comprising a rotatable drum, means supporting the drum for partial immersion in the adhesive in the adhesive receptacle, said supporting means being movable to withdraw the drum from the adhesive receptacle and to dispose the same in the washing chamber, feed roller elements tohold the label against the drum mounted for movement towards and away from the drum, means to rotate the drum, and means connected to said feed rollers and interconnectable with the drum rotating means for rotating the feed roller elements when the drum is rotated.

5. In a mechanism of the kind described, a main support having an adhesive receptacle and a washing chamber, feed means for applying adhesive from the adhesive chamber to a label or the like, comprising a rotatable drum, means supporting the drum for partial immersion in the adhesive in the adhesive receptacle, said supporting means being movable to withdraw the drum from the adhesive receptacle and to dispose the same in the washing chamber, feed elements to urge the label against the drum, and means pivoting the feed elements to the main support for movement toward and away from the drum, said means comprising a cover adapted to extend across the washing chamber to adjacent the adhesive receptacle.

6. In a gumming machine, a base, an adhesive receptacle thereon, a washing chamber on the base alongside the adhesive receptacle-but separated therefrom, a feed roller, framework means upon which the feed roller is rotatably mounted at its ends, means pivoting the framework means to the base between the receptacle and the chamber, whereby the feed roller may be swung from the receptacle to the chamber, and a scraper means supported on the framework for disposition adjacent the surface of the feed roller.

'7. In a gumming machine, a base, an adhesive receptacle thereon, a washing chamber on the base alongside the adhesive receptacle but separated therefrom, a feed roller, framework means upon which the feed roller is rotatably mounted at its ends, means pivoting the framework means to the base between the receptacle and the chamber, whereby the feed roller may be swung from the receptacle to the chamber, a scraper means supported on the framework for disposition adjacent'the surface of the feed roller, and means "for -adjusting the scraper toward and fromi the reed roller.

.,8. ,In agumming machine, a-base, an adhesive receptacle thereon, a washing chamber on the ibasealongside the adhesive receptacle but separated therefrom, a feed roller, irameworkmeans .upon which the feed roller is rotatably mounted vlat-its, ends, means pivoting the framework means fto thebase, between the receptacle and the chamber, whereby the feed roller may be swung ,irom

thereceptacle to the chamber, a scraper means supported on theiramework for disposition adjacent the surface of the feed, roller, means for adjusting, the scraper toward and from the feed roller, comprising resilient means urging the scraper toward the feed roller, and means towithdraw,.the scraper against theforcc of said resilient means.

, 9. In a mechanism of the kind described, a feed roller ascraper, means movably supporting the scraper, adjacent the feed roller, yieldable ,means surging the scraper toward the roller, means, to ,withdraw the scra er from the feed roller again ,the force of the yieldable means, and meanssnpporting thesfeed roller and scraper for movement asaunit.

.10. In amechanism of the kind described, a

,feedroller, a support, aescraper bar pivotally mounted on the support adjacent the feed roller and pivotable to move a the scraper toward and from the roller, yieldable means urging the bar to .pivotthe scraper against the roller, and means to pivot the bar. in the opposite direction against the yieldable means, said support also supporting said teed roller and being pivotally mounted i01- against the roller, theiscrew being operable to move the arm in an opposite direction, said support also supporting said feed roller and being pivotally mounted for movement of the feed roller and scraper as a unit.

12. In ,a mechanism of the kind described, a

vibasaean adhesive receptacle thereon, a feed roller,

framework means attached to the base, and sup porting the feed roller, a scraper means on .the

framework, a label deflecting means-mounted on the framework means and extending into assorciation with the roller, said roller, scraper means, ..;defiect n :means and irameworhmeans eon- ;stitut n an nde endent m va l unit- 111 -11 cm chan s w t k e des ibe r a "chase, ian; adhesivegreccptaclejthereon, a feed, roll- -;-er;:frameworkmeans attached to the base, and srsupporting 'the, 'ieed, roller, ;a :scraperemeans von who l-framework, means-on the :framework to ad just the scraper means toward and from the feed rol1er,a labeldeflecting means mounted onthe "*frameworbmeans and extending into association with; the roller, -said roller, scraper -means,-de-

fleeting means and framework means constituting an-independently movableunit.

'14. "In a mechanism, ,ofxthe kind described, a

. roller, asupp r th rei0r e ct n fin er holdi m an on hes is it amurali ,.ofdefiect n fin e sex end from t e hold n meansac o to the roller and, ,at least partially around the 1-same t0. points 'beyonda :lipehrawm from the ho dinamaansthmueh.the eei rnfl m e res n avmes hani m orv t e ind desalte 79115 u or he e r dsi ctme fing held- .inamean 1 th ne t aplu ia iy bi f atin n srsrem veblr booked to. th holdin mea andeatendingiromth hol in m an cros to herolle and at lea t par ial nd t S m toipoints be nd a, l n draw r th oldin me ns r.cu h the cente of. a d ac s h .1 In a of th kind described a m t asa mrt h re o adete nefinee heldi means o theslilperta p it of deflect fins t 1Qi,. 0m th hold n means cros ,tolthe ro le and a teast pa tially around th ame ts beyond a li drawn ir n the h dine, through the snis o a ac os th .rollsean s aver me ns x n in aq css th el efrandad a entre defl qtin fi ers- ,17. 'u mins machine a b e havin a adhesive receptacle and a washing chamber mounted. side by sidethereon, but separated' f rom each other by a partition, fr mework means i oted to the base at the partition on the opposite sides o therbas a rolle oppos te e rin s on the. fram o s a e f om th piv t to o the roller partially inserted into the adhesive ece ta s id rame or mean xt ndi ir m t ep ots c1 w t wa th re tacl and wardly to the bearings, whereby when the framework i ivot absinth ots t anvas over the partition and insert the roller into the washins ch mb r nto imme ion relation therewith 18. In a machine for applying adheslveto labels or he like, an adhes e ap licator com ri i a rotatable drum having a plurality of recesses carr d c ime su fa ereQLasQraP r ex endin the lengthof said drum, a rod mounting a plur y o e evat n lin e s. en a i a d um i said recesses, n means fo tating sa d mm. sa drum, scr e fingers. an rotatin me comprising an independently movable unit.

19,111 a machine for applying adhesive to labels or the like, an adhesive applicatorv comprising a rotatable drum having a plurality of, recesses carried on the surface thereof, a scraper extending the length of said drum, 2, rod mounting a plur i of elevatin fi ge s en a sa d um i said recesses, driving means {or rotating, said drum, and meansincluding a pair otrollers'arranged to be driven by said driving means for passing alabel or the like into contact with said .drumt a a of rol e s e n mo n e f movement towards and away from said drum.

20. In a'mechanism of the kind described, an adhesive receptacle, a washing f .amber,' aid receptacleand chamber being supported in adjacent relationship, a rotatableadhesive applying member, means for rotating the membenl and movable means supporting bothsaid member and said rotating means in operative relation to' said receptacle and said chamber, said member and said rotating means being optionally movable as a to dispose the member, in dipped relation to adhesive in sa acl an -t d s o e th member d he rot t meansin wash rel non to awashing fluidin said washing chamber.

,,2,1. In combination, a main support having an adhesive receptacle and a washin chamber, a rota b u h ive apply n mem er. m ns r .tating the member, a scraper member located in adhesive scraping relation. to the f rst member,

and movable means supporting the first member swe ten r ,m b. as a un t on t main. support in relation to the receptacle and chamber, said unit being movable to dispose the first member in dipped relation to adhesive in the adhesive receptacle and the first member and scraper member in fully immersed relation to a washing fluid in the washing chamber.

22. In combination, a main support having an adhesive receptacle and a washing chamber, a rotatable adhesive applying member, means for rotating the member, a scraper member located in adhesive scraping relation to the first member, deflecting fingers operatively mounted in respect to the first member, and movable means supporting the first member and scraper member and deflecting fingers as a unit on the main support in relation to the receptacle and chamber, said unit being movable to dispose the first member in dipped relation to adhesive in the adhesive receptacle and the first member and scraper member and deflecting fingers in fully immersed relation to a washing fluid in the washing chamber.

23. In combination, a main support having an adhesive receptacle and a washing chamber, a rotatable adhesive applying member, means for rotating the member, a scraper member located in adhesive scraping relation to the first member, deflecting fingers operatively mounted in respect to the first member, and movable means supporting the first member and scraper member and deflecting fingers and first member rotating means as a unit on the main support in relation to the receptacle and chamber, said unit being movable to dispose the first member in dipped 1 i 9n $9 a hesive 51 ,9 W1 i? P 10 and the first member and scraper member and deflecting fingers and first member rotating means in fully immersed relation to a washing fluid in the washing chamber.

24. In a mechanism of the kind described, a main support having an adhesive receptacle and a washing chamber, feed means for applying adhesive from the adhesive chamber to a label or the like, and means supporting the feed means for movement from an operating position relative to the adhesive receptacle to a washing position in the washing chamber, said washing chamber being of sufficient capacity to receive the feed means in immersed relation therein, said feed means being movable into fully immersed position in said washing chamber.

WALTON C. MARSH.

REFERENCES CITED The following references are of record in the file of this patent:

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